I know you are already looking into this,but I thought this might help - I've had a response to my trouble ticket with EV1 - they seem to think its the Poplar Proxy.
Here is an extract from what they sent me:
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Testing to that proxy address was terrible.
telnet@240.125#ping 62.255.64.12 co 1000 size 1420 source 66.98.246.1
Sending 1000, 1420-byte ICMP Echo to 62.255.64.12, timeout 5000 msec, TTL 64
Success rate is 97 percent (974/1000), round-trip min/avg/max=180/203/220 ms.
(very bad packet loss - 3%)
The trace to that host:
240.125#trace 62.255.64.12
Type Control-c to abort
Tracing the route to IP node 62.255.64.12 from 1 to 30 hops
1 <1 ms <1 ms <1 ms gphou-66-98-241-4.ev1.net [66.98.241.4]
2 <1 ms <1 ms <1 ms gphou-66-98-240-10.ev1.net [66.98.240.10]
3 <1 ms <1 ms <1 ms g0-3.na21.b015619-0.iah01.atlas.cogentco.com [38.112.25.21]
4 1 ms 1 ms 1 ms g10-3-0.core01.iah01.atlas.cogentco.com [66.28.64.65]
5 15 ms 15 ms 15 ms p13-0.core01.mci01.atlas.cogentco.com [66.28.4.106]
6 26 ms 26 ms 29 ms p5-0.core02.ord01.atlas.cogentco.com [66.28.4.34]
7 39 ms 26 ms 26 ms p15-0.core01.ord01.atlas.cogentco.com [66.28.4.61]
8 58 ms 56 ms 47 ms p14-0.core01.bos01.atlas.cogentco.com [66.28.4.109]
9 118 ms 117 ms 118 ms p3-0.core01.lon02.atlas.cogentco.com [130.117.0.45]
10 212 ms 209 ms 209 ms tele-ic-1-ge-001-217.inet.ntl.com [212.250.14.61]
11 211 ms 212 ms 218 ms pop-bb-b-so-430-0.inet.ntl.com [62.253.185.81]
12 210 ms 209 ms 214 ms popl-t2core-b-pos81.inet.ntl.com [213.105.174.118]
13 208 ms 203 ms 213 ms popl-cache-9.server.ntli.net [62.255.64.12]
The loss seems to be between hops 10 and 11 outbound. I would need an inbound trace from the proxy to the server to be sure.
good to hop 10:
240.125#ping 212.250.14.61 size 1420 co 1000
Sending 1000, 1420-byte ICMP Echo to 212.250.14.61, timeout 5000 msec, TTL 64
Success rate is 100 percent (1000/1000), round-trip min/avg/max=109/109/128 ms.
(1,000 pings in both directions, perfect, 109 ms avg latency)
bad to hop 11:
240.125#ping 62.253.185.81 size 1420 co 100
Sending 100, 1420-byte ICMP Echo to 62.253.185.81, timeout 5000 msec, TTL 64
Success rate is 98 percent (98/100), round-trip min/avg/max=204/214/250 ms.
(loss and higher latency and high jitter)
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I have to say that I'm using Swansea proxies again as the Poplar one is awful again currently
Thanks again for your help.
cheers
Ian